Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e375fe87f2be34…

MALICIOUS

PDF

34.7 KB Authoring application: PDF Studio
MD5: 4415b5f81f9c6f3d7980e9a443be27c1 SHA-1: f56361a6e06f6d4e62ea1c80d6b8e53e5cda0577 SHA-256: c4e375fe87f2be3463684cb89a90d0967580baeb6016511f9d4c9b7368644b1b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a malicious intent. No scripts were extracted from this sample, and the document body contained mostly garbled text and a few URLs.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.wrhslax.com/uploads/1/3/0/6/130603888/9410307.pdf
    • http://puravidadoula.com/uploads/1/3/0/7/130775126/3ef56eaad8b0ac.pdf
    • http://itcouldbu.com/uploads/1/3/0/7/130739578/xawurokazo.pdf
    • http://noortrition.com/uploads/1/3/0/2/130288579/juterepivumo.pdf
    • http://anatoly-nikolsky.com/uploads/1/3/0/5/130543757/3847631.pdf
    • http://kdswarehouse.com/uploads/1/3/0/4/130476859/xedat.pdf
    • http://heli-hydrant.info/uploads/1/3/0/8/130873994/4933929.pdf
    • http://thefreewhiskeyband.com/uploads/1/3/0/8/130814328/9048076.pdf
    • http://memartopla.site/uploads/1/3/0/7/130776520/04982eda4b7d.pdf
    • http://jasonshawphotography.com/uploads/1/3/0/7/130775162/rimiwinanono_wikowuxamasotat_faxadukizagam_vadirezuloje.pdf
    • http://webmail.3drenderingandesign.com/uploads/1/3/0/7/130776791/9125021.pdf
    • http://ifixshop.co.uk/uploads/1/3/0/3/130323155/1790154.pdf
    • http://thedailydelillo.com/uploads/1/3/0/6/130603715/4f3e825.pdf
    • http://scottcarlic.com/uploads/1/3/0/4/130435870/noxuvagiwojuwi_tekovix_taxem_lepiwibizo.pdf
    • http://supermaggie.net/uploads/1/3/0/4/130436079/rusemojoketak-vibanubep-xajosekiwijo.pdf
    • http://shop.treasuretrovetoffee.com/uploads/1/3/0/6/130604692/7590480.pdf
    • http://www.zuben.com/uploads/1/3/0/6/130621628/fajizel.pdf
    • http://ductapecreations101.com/uploads/1/3/0/2/130291874/fcf93541e8791e.pdf
    • http://socialresponsecenter.com/uploads/1/3/0/4/130475955/posagafe_pinud_zuminax.pdf
    • http://siddhavedalineage.com/uploads/1/3/0/5/130589194/5374633.pdf
    • http://nobupaloalto.devsite-1.com/uploads/1/3/0/6/130604248/130604248.html#coracoid+impingement+of+left+shoulder+icd+10

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000028e8.bin
defce137016dffe7d35be5774f8dd88fcdaa8aad03b2d3350949e42d52230293		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28E8 7496 bytes

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